... vibration isolation,impact mitigation,stepless speed regulation YOTFJ450/560/650/750/875 speed-adjustable hydraulic coupling reverse-gear reducerProduct usage: ... unit series products of 280, 420, 560, 650, 670, 750, 875, 1000, 1150,etc; oil-extended adjusting centrifugal turbine torque ... products with working chambers diameter of 480, 550, 650, 750, 830, 900 mm, which can match with internal combustion ...